要想提高英语水平，除了每天的练习外，掌握必要的词汇也是必不可少的。
1.Division n the act of dividing or partitioning; separation 分开或分割
The division of wealth is very important.
派生词汇Divide vt 分割，分离 dividend n 红利
2.Splitting adj very painful 剧烈的
I have got a splitting headache.
派生词汇Split 劈开，切开adj已被分开的或被劈开的n劈开
3.Audible adj that is heard or that can be heard 听得见的
Her voice was scarcely audible above the noise of the wind.
派生词汇Audibly adv 能听见地 audibleness n 可被听到 audibility n 能听度
4.Ethnic adj of a national, racial or tribal group that has a common cultural tradition 种族的
Do not look at it with your ethnic view.
5.Causality ncause and result 因果
Do not forget the causality.
派生词汇Casual adj 表原因的，构成原因的，因果关系的
6.Landslide n sliding of a mass of earth, rock, etc. down the side of a mountain, cliff, etc 崩塌，滑坡